While it is an unnecessary inconvenience to have to block that string low-overhead-low, removing the overhead portion and keeping everything else the same won't change anything in high level play, as he will still have a legitimate 50/50. It just makes it so that you can think less once you do successfully block the first hit.
That said, whether in high level or low level play, he really does not need that string to be low, OH, low.
Agree with the video in general. The Zoning in this game isn't the problem, Deadshot in particular is just a bit too strong. Not that he can be defeated of course. All he needs is just some tiny tweaks and he's fine